| 摘要 |
According to the present invention, a main body interior drainage port (20) and a main body interior drainage path (21) are formed at a point (19) where there is a risk of water infiltrating. The main body interior drainage port (20) is formed so as to pass through a base wall (14). The main body interior drainage port (20) is formed so as to face the interior of a lower cover (5), and drops, on the lower cover (5), water that has infiltrated. The main body interior drainage path (21) is composed of a base wall (14a) that constitutes a bottom portion, and main body interior drainage walls (22, 23) that stand upright on both sides of said base wall (14a) that constitutes a bottom portion. The main body interior drainage path (21) is formed in the direction of the main body interior drainage port (20) which passes through the base wall (14a) that constitutes a bottom portion. The main body interior drainage wall (22) has one end that is formed so as to be integrated with the inner surface of a cover engagement wall (16) and another end that is formed so as to be contiguous with respect to the edge of the main body interior drainage port (20) opening. |
